A heat-resistant PET protective film

Abstract

The utility model discloses a heat-resistant PET protective film, comprising a roll, a PET protective film body is installed on the outside of the roll, connecting frames are installed at both ends of the roll, a top plate is installed between the top ends of the connecting frames, and a connecting plate is installed at the bottom end of the top plate. The utility model is provided with a connecting plate, and a cutting knife that can be stored and stored is provided inside. When the cutting knife is needed during use, the shifting block is pushed outward to drive the positioning pin to separate from the positioning groove, that is, the fixing of the pressure rod is cancelled, and then the pressure rod is pressed downward to drive the cutting knife to contact the PET protective film body. After the cutting is completed, the pressure rod is released to drive the cutting knife to reset, and the shifting block is pushed inward to fix the cutting knife. That is, by storing and fixing the cutting knife, it can be avoided that the surface of the PET protective film body is damaged due to external force when it is not in use, thereby improving the protection effect of the PET protective film body.

Description

Technical Field

[0001] The utility model relates to the technical field of PET protective films, in particular to a heat-resistant PET protective film. Background Art

[0002] PET protective film is made of plastic film or aluminum-plastic composite material as the base material, coated with silicone pressure-sensitive adhesive on one side, made into a roll and then cut and pasted on the surface of electronic products, which can effectively prevent the surface of electronic products from being scratched or contaminated. In the prior art, PET protective film generally includes a roll and a protective film body, and the protective film body is wound on the roll;

[0003] Chinese patent authorization announcement number CN 214362558 U discloses an antibacterial PET protective film, including a roll and a protective film body, the protective film is wound on the roll, the two side walls of the roll are detachably connected with positioning columns, both positioning columns are provided with guide columns, the two positioning columns are provided with guide grooves corresponding to the guide columns, one end of each guide column is inserted into the guide groove, the guide column and the guide groove are slidably matched, a mounting plate is provided between the two guide columns, one end of the mounting plate is connected with a rotating column, the rotating column is rotatably connected to the two guide columns, the other end of the mounting plate is detachably connected with a cutting knife, and the end of the cutting knife away from the mounting plate is in conflict with the side wall of the protective film body. When the protective film body needs to be cut, the cutting knife conflicts with the protective film body under the rotation of the rotating column, and people can cut along the cutting knife. The present application has the effect of facilitating people to cut the protective film body. The above-mentioned existing technical solution has the following shortcomings: the technical solution can facilitate cutting of the protective film body by providing a cutting knife, but the cutting knife body is not easy to store during use, so that the cutting knife can be accidentally pushed into contact with the protective film body under external collision or external force, causing damage to the surface of the protective film body, and there is room for improvement. Utility Model Content

[0004] The utility model aims to provide a heat-resistant PET protective film to solve the problem of inconvenience in storing the cutting knife proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat-resistant PET protective film, comprising a roll, a PET protective film body is installed on the outside of the roll, connecting frames are installed at both ends of the roll, and a top plate is installed between the top ends of the connecting frames, a connecting plate is installed at the bottom end of the top plate, and a cutting knife is installed inside the connecting plate, a accommodating groove is provided inside the top plate, and a pressure rod is installed at the top end of the accommodating groove, a connecting rod is installed at the bottom end of the pressure rod, and a spring is installed on the outside of the connecting rod, and the bottom end of the connecting rod is connected to the top end of the cutting knife.

[0006] When using a heat-resistant PET protective film of the present technical solution, the cutting knife can be stored and fixed to avoid damage to the surface of the PET protective film body due to external force when not in use, thereby improving the protective effect of the PET protective film body.

[0007] Preferably, a movable groove is provided on one side inside the top plate, and a movable block is installed inside the movable groove, a positioning pin is installed on the inner side of the movable block, a positioning groove is provided inside the pressure rod, and the positioning groove is connected to the positioning pin.

[0008] Preferably, a shift block is installed on the top of the movable block, and the top of the shift block is evenly provided with anti-slip textures.

[0009] Preferably, a second magnet is installed inside the positioning pin, a first magnet is installed inside the pressure rod on one side of the positioning groove, and the first magnet is magnetically connected to the second magnet.

[0010] Preferably, a PET base layer is arranged inside the PET protective film body, and heat-resistant structures are arranged at both ends of the PET base layer, and wear-resistant layers are arranged on the outer sides of the heat-resistant structures.

[0011] Preferably, the heat-resistant structure includes a first heat-resistant layer, a heat-conducting layer is arranged outside the first heat-resistant layer, a second heat-resistant layer is arranged outside the heat-conducting layer, and a third heat-resistant layer is arranged outside the second heat-resistant layer.

[0012] Preferably, the heat-conducting layer is a graphene coating, the first heat-resistant layer and the second heat-resistant layer are polyimide layers, and the third heat-resistant layer is a ceramic layer.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the heat-resistant PET protective film realizes the functions of being easy to store and heat-resistant;

[0014] By providing a connecting plate and a storable cutting knife inside, when the cutting knife is needed during use, the shifting block is pushed outward to drive the positioning pin to separate from the positioning groove, thereby canceling the fixation of the pressure rod, and then the pressure rod is pressed downward to drive the cutting knife to contact the PET protective film body. After the cutting is completed, the pressure rod is released to drive the cutting knife to reset, and the shifting block is pushed inward to fix the cutting knife. That is, by storing and fixing the cutting knife, it is possible to avoid damage to the surface of the PET protective film body due to external force when the cutting knife is not in use, thereby improving the protection effect of the PET protective film body.

[0015] By arranging a heat-resistant structure on the outside of the PET protective film body, the third heat-resistant layer adopts a ceramic layer during use, which can withstand a certain amount of heat through its high temperature resistance. The second heat-resistant layer and the first heat-resistant layer adopt a polyimide layer, which can simultaneously further resist the heat through their own heat resistance. In combination with the thermal conductive layer with a graphene coating, the heat can be dissipated to achieve a heat dissipation effect, thereby effectively improving the heat resistance of the PET protective film body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the top plate of the utility model;

[0020] Figure 4 For the utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the movable block of the utility model;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure inside the main body of the PET protective film of the utility model.

[0023] Explanation of the reference numerals in the figure: 1. top plate; 2. connecting plate; 3. connecting frame; 4. PET protective film body; 5. reel; 6. pressure rod; 7. cutting knife; 8. connecting rod; 9. receiving groove; 10. spring; 11. first magnet; 12. second magnet; 13. positioning groove; 14. positioning pin; 15. movable block; 16. movable groove; 17. shift block; 18. wear-resistant layer; 19. heat-resistant mechanism; 1901. first heat-resistant layer; 1902. heat-conducting layer; 1903. second heat-resistant layer; 1904. third heat-resistant layer; 20. PET base layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 6 , the utility model provides an embodiment: a heat-resistant PET protective film, comprising a roll 5, and a PET protective film body 4 is installed on the outer side of the roll 5;

[0026] A PET base layer 20 is arranged inside the PET protective film body 4, and heat-resistant mechanisms 19 are arranged at both ends of the PET base layer 20, and wear-resistant layers 18 are arranged on the outside of the heat-resistant mechanisms 19, and the heat-resistant mechanisms 19 include a first heat-resistant layer 1901, and a heat-conducting layer 1902 is arranged on the outside of the first heat-resistant layer 1901, a second heat-resistant layer 1903 is arranged on the outside of the heat-conducting layer 1902, and a third heat-resistant layer 1904 is arranged on the outside of the second heat-resistant layer 1903, the heat-conducting layer 1902 is a graphene coating, the first heat-resistant layer 1901 and the second heat-resistant layer 1903 are polyimide layers, and the third heat-resistant layer 1904 is a ceramic layer;

[0027] Specifically, Figure 6 As shown, when in use, by arranging a heat-resistant mechanism 19 on the outer side of the PET protective film body 4, the third heat-resistant layer 1904 adopts a ceramic layer during use, which can withstand heat to a certain extent through its high temperature resistance, and the second heat-resistant layer 1903 and the first heat-resistant layer 1901 adopt a polyimide layer, which can further resist heat through their own heat resistance, and cooperate with the heat-conducting layer 1902 with a graphene coating, which can dissipate heat to achieve a heat dissipation effect, thereby effectively improving the heat resistance of the PET protective film body 4;

[0028] Connecting frames 3 are installed at both ends of the reel 5, and a top plate 1 is installed between the top ends of the connecting frames 3;

[0029] A movable groove 16 is provided on one side of the top plate 1, and a movable block 15 is installed inside the movable groove 16, a positioning pin 14 is installed on the inner side of the movable block 15, a positioning groove 13 is provided inside the pressure rod 6, and the positioning groove 13 is connected to the positioning pin 14, a shift block 17 is installed on the top of the movable block 15, and the top of the shift block 17 is evenly provided with anti-slip patterns, a second magnet 12 is installed inside the positioning pin 14, a first magnet 11 is installed inside the pressure rod 6 on one side of the positioning groove 13, and the first magnet 11 is magnetically connected to the second magnet 12;

[0030] Specifically, Figure 4 As shown, when in use, the positioning pin 14 is driven to separate from the positioning groove 13 by pushing the push block 17 outward, that is, the fixation of the pressure rod 6 is cancelled, and vice versa, the pressure rod 6 can be fixed, thereby preventing it from moving due to external force. Secondly, the positioning pin 14 can be fixed after connection under the action of the first magnet 11 and the second magnet 12;

[0031] A connecting plate 2 is installed at the bottom end of the top plate 1, and a cutting knife 7 is installed inside the connecting plate 2. A accommodating groove 9 is provided inside the top plate 1, and a pressure rod 6 is installed at the top end of the accommodating groove 9. A connecting rod 8 is installed at the bottom end of the pressure rod 6, and a spring 10 is installed on the outside of the connecting rod 8. The bottom end of the connecting rod 8 is connected to the top end of the cutting knife 7.

[0032] Working principle: The utility model is provided with a storable cutting knife 7 inside the connecting plate 2. When the cutting knife 7 is needed, the shifting block 17 is pushed outward to drive the positioning pin 14 to separate from the positioning groove 13, thereby canceling the fixation of the pressure rod 6. Then, the pressure rod 6 is pressed downward to drive the cutting knife 7 to contact the PET protective film body 4. After the cutting is completed, the pressure rod 6 is released to drive the cutting knife 7 to reset, and the shifting block 17 is pushed inward to fix the cutting knife 7. That is, by storing and fixing the cutting knife 7, it is possible to avoid damage to the surface of the PET protective film body 4 caused by external force when it is not in use, thereby improving the The protective effect of the PET protective film main body 4 is improved. At the same time, a heat-resistant structure 19 is arranged on the outside of the PET protective film main body 4. During use, the third heat-resistant layer 1904 adopts a ceramic layer, which can withstand a certain amount of heat through its high temperature resistance. The second heat-resistant layer 1903 and the first heat-resistant layer 1901 adopt a polyimide layer, which can further withstand the heat through their own heat resistance. In combination with the heat-conducting layer 1902 with a graphene coating, the heat can be dissipated to achieve a heat dissipation effect, thereby effectively improving the heat resistance of the PET protective film main body 4.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A heat-resistant PET protective film, comprising a roll (5), characterized in that: A PET protective film body (4) is installed on the outer side of the reel (5), connecting frames (3) are installed on both ends of the reel (5), and a top plate (1) is installed between the top ends of the connecting frames (3), a connecting plate (2) is installed at the bottom end of the top plate (1), and a cutting knife (7) is installed inside the connecting plate (2), a receiving groove (9) is provided inside the top plate (1), and a pressure rod (6) is installed at the top end of the receiving groove (9), a connecting rod (8) is installed at the bottom end of the pressure rod (6), and a spring (10) is installed on the outer side of the connecting rod (8), and the bottom end of the connecting rod (8) is connected to the top end of the cutting knife (7).

2. A heat-resistant PET protective film according to claim 1, characterized in that: A movable groove (16) is provided on one side inside the top plate (1), and a movable block (15) is installed inside the movable groove (16), a positioning pin (14) is installed inside the movable block (15), and a positioning groove (13) is provided inside the pressure rod (6), and the positioning groove (13) is connected to the positioning pin (14).

3. A heat-resistant PET protective film according to claim 2, characterized in that: A shift block (17) is installed on the top of the movable block (15), and the top of the shift block (17) is evenly provided with anti-slip patterns.

4. The heat-resistant PET protective film according to claim 2, characterized in that: A second magnet (12) is installed inside the positioning pin (14), a first magnet (11) is installed inside the pressure rod (6) on one side of the positioning groove (13), and the first magnet (11) is magnetically connected to the second magnet (12).

5. The heat-resistant PET protective film according to claim 1, characterized in that: A PET base layer (20) is arranged inside the PET protective film body (4), and heat-resistant structures (19) are arranged at both ends of the PET base layer (20), and a wear-resistant layer (18) is arranged on the outside of the heat-resistant structure (19).

6. A heat-resistant PET protective film according to claim 5, characterized in that: The heat-resistant structure (19) comprises a first heat-resistant layer (1901), and a heat-conducting layer (1902) is arranged on the outer side of the first heat-resistant layer (1901), a second heat-resistant layer (1903) is arranged on the outer side of the heat-conducting layer (1902), and a third heat-resistant layer (1904) is arranged on the outer side of the second heat-resistant layer (1903).

7. A heat-resistant PET protective film according to claim 6, characterized in that: The heat-conducting layer (1902) is a graphene coating, the first heat-resistant layer (1901) and the second heat-resistant layer (1903) are polyimide layers, and the third heat-resistant layer (1904) is a ceramic layer.

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